Heat unsalted butter in the saucepan.

Add the onions and mushrooms and cook until soft.

Stir in flour,water,chicken cube,salt and pepper.

Cook over low heat and stir constantly until the mixture is smooth and thickened

Pour milk and cook at low heat. Remember not to boil the mixture after the addition of milk to prevent curdling.

With the electric blender, blend the mixture unril it becomes smooth.

Pour blended mixture into the saucepan and cook for another 5 minutes before removing it from the heat.

Serve it in a bowl and enjoy